| Full text | |
| Author(s): |
Courrol, Lilia Coronato
;
Martinez, Oscar
;
Samad, Ricardo Elgul
;
Gomes, Laercio
;
Ranieri, Izilda Marcia
;
Baldochi, Sonia Licia
;
de Freitas, Anderson Zanardi
;
Vieira Junior, Nilson Dias
;
Wetter, NU
;
Frejlich, J
Total Authors: 10
|
| Document type: | Journal article |
| Source: | MAGNETIC FIELDS IN THE UNIVERSE: FROM LABORATORY AND STARS TO PRIMORDIAL STRUCTURES; v. 992, p. 3-pg., 2008-01-01. |
| Abstract | |
We report properties of the spatial and spectral distribution of color centers produced in LiF single crystals by ultrashort high intensity laser pulses (60 fs, 10 GW) using confocal spectral microscopy and atomic force microscopy. We could identify a large amount of F centers that gave rise to aggregates such as F-2, F-4, F-2(+) and F-3(+) distributed in cracked shape brownish areas. We have taken a 3D image using confocal microscopy of the sample (luminescent image) and no difference is observed in the different planes. The atomic force microscopy image clearly shows the presence of defects on the modified surface. The formation of micrometer or sub-micrometer voids, filaments and void strings was observed and related to filamentation process. (AU) | |
| FAPESP's process: | 00/15135-9 - Implementation of a terawatt laser system and its applications |
| Grantee: | Nilson Dias Vieira Junior |
| Support Opportunities: | Research Projects - Thematic Grants |